Inverse electron demanding DielsâAlder reactions of
o-thioquinones with styrenes, followed by simple manipulations of
the obtained cycloadducts, allowed the synthesis of polyphenolic
4-thiaflavans which showed antioxidant activity miming either flavonoid or
tocopherol behaviour.
反向电子需求的Diels–Alder反应,将邻
硫喹啉与
苯乙烯反应,随后对所得环加成物进行简单操作,合成了具有抗氧化活性的聚
酚类4-
硫黄酮,这些活性模仿了某种
黄酮或
生育酚的作用。